from google.appengine.ext import ndb

class User(ndb.Model):
    _use_cache = False
    _use_memcache = False
    secret = ndb.StringProperty(indexed=False)

k = User(secret='iamunindexed').put()
# in another request
user = k.get()
user.secret = 'iamreallyunindexed'
user.put()
